package com.kt.cart.vo;

import java.math.BigDecimal;
import java.util.List;

/**
 * @program: e-mall
 * @description: 整个购物车对象
 *               需要计算个别属性，必须重写其的get方法，保证每次获取属性都会进行计算
 * @author: KamTang
 * @create: 2022-01-16 10:58
 **/
public class Cart {

    List<CartItem> items;

    /**
     * 商品数量
     */
    private Integer countNum;

    /**
     * 商品类型数量
     */
    private Integer countType;

    /**
     * 商品总金额
     */
    private BigDecimal totalAmount;

    /**
     * 减免价格
     */
    private BigDecimal reducePrice = new BigDecimal("0.00");

    public List<CartItem> getItems() {
        return items;
    }

    public void setItems(List<CartItem> items) {
        this.items = items;
    }

    public Integer getCountNum() {
        int count = 0;
        if (items != null && items.size() > 0) {
            for (CartItem item : items) {
                count += item.getCount();
            }
        }
        return count;
    }


    public Integer getCountType() {
        int count = 0;
        if (items != null && items.size() > 0) {
            for (CartItem item : items) {
                count += 1;
            }
        }
        return count;
    }


    public BigDecimal getTotalAmount() {
        BigDecimal amount = new BigDecimal("0");
        // 1、计算购物项总价
        if (items != null && items.size() > 0) {
            for (CartItem item : items) {
                if (item.getCheck()) {
                    BigDecimal totalPrice = item.getTotalPrice();
                    amount = amount.add(totalPrice);
                }
            }
        }
        // 2、减去优惠价格
        BigDecimal subtract = amount.subtract(getReducePrice());
        return subtract;
    }


    public BigDecimal getReducePrice() {
        return reducePrice;
    }

    public void setReducePrice(BigDecimal reducePrice) {
        this.reducePrice = reducePrice;
    }
}
